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Whatsoever substance spread over a surface

A blanket is a covering that is practical to the surface of an object, commonly referred to as the substrate. The purpose of applying the coating may exist decorative, functional, or both.^[1]

Paints and lacquers are coatings that generally have dual uses of protecting the substrate and being decorative, although some artists paints are only for ornament, and the paint on large industrial pipes is for preventing corrosionand identification eastward.chiliad. blueish for process water, red for burn-fighting control etc.

Functional coatings may be practical to alter the surface properties of the substrate, such as adhesion, wettability, corrosion resistance, or wear resistance.^[two] In other cases, e.m. semiconductor device fabrication (where the substrate is a wafer), the coating adds a completely new property, such as a magnetic response or electrical conductivity, and forms an essential part of the finished product.

A major consideration for most blanket processes is that the coating is to be applied at a controlled thickness, and a number of different processes are in use to reach this control, ranging from a simple brush for painting a wall, to some very expensive machinery applying coatings in the electronics industry. A further consideration for 'non-all-over' coatings is that command is needed equally to where the coating is to be applied. A number of these non-all-over blanket processes are printing processes.

Many industrial coating processes involve the application of a sparse film of functional material to a substrate, such as paper, material, flick, foil, or sheet stock. If the substrate starts and ends the process wound up in a curl, the procedure may be termed "roll-to-roll" or "web-based" blanket. A roll of substrate, when wound through the blanket machine, is typically called a spider web.

Coatings may be applied every bit liquids, gases or solids (e.g. Pulverization coatings.

Functions of coatings [edit]

Adhesive – adhesive tape, force per unit area-sensitive labels, iron-on fabric
Changing adhesion properties
- Not-stick PTFE coated- cooking pans
- Release coatings for instance silicone-coated release liners for many self-adhesive products
- primers encourage subsequent coatings to adhere well (also sometimes accept anti-corrosive properties)
Optical coatings
- Reflective coatings for mirrors
- Anti-cogitating coatings example on spectacles
- UV- absorptive coatings for protection of eyes or increasing the life of the substrate
- Tinted as used in some coloured lighting, tinted glazing, or sunglasses
Catalytic east.k. some self-cleaning glass
Light-sensitive every bit previously used to make photographic motion-picture show
Protective coatings
- Most surface coatings or paints are to some extent protecting the substrate e.grand.
  - Sealing and waterproofing forest
  - Sealing the surface of concrete
    - Motion-picture show-forming sealers and floor paint
    - Seamless polymer/resin flooring
    - Bund wall/containment lining
  - Waterproofing and damp proofing of concrete walls
  - Roof coating
  - Concrete bridge deck membranes
  - Sealing and waterproofing of masonry
  - Preserving mechanism, equipment and structures^[3]
    - Maintenance coatings/paints for metals, alloys and physical
    - Chemic resistant coatings
    - UV blanket
  - Wear resistance
    - Anti-Friction, Wear and Scuffing Resistance Coatings for Rolling-element bearings^[4]
    - Hard anti-scratch blanket on plastics and other materials e.g. of titanium nitride to reduce scratching and abrasion loss
    - Barrier coatings on physical, metals and alloys subject to erosion/abrasive attack
- Anti-corrosion,^[5] ^[6]- ensure metallic components have the longest possible lifespan past preventing substrates from external environmental parameters
  - Underbody sealant for cars
  - Many plating products
  - Preserving equipment and structural steel from degradation
  - Under thermal insulation and nether protective fireproofing for structural steel
  - Calculation drinking glass flakes and zinc flakes to improve resistant of h2o and chemicals permeating^[vii] ^{[ circular reference ]}
- Passive fire protection
- Insulation
- Waterproof fabric and waterproof paper
- Anti-graffiti
- Antimicrobial surface
- Foul release, anti-fouling and Biomimetic antifouling blanket
Magnetic properties such equally for magnetic media like cassette tapes, floppy disks, and some mass transit tickets
Electrical or electronic backdrop
- Conformal Antenna, e.g., metal coatings on plastic airframes
- Conductive coatings e.grand. to industry some types of resistors
- Insulating coatings due east.g. on magnet wires used in transformers
Scent properties such as scratch and sniff stickers and labels
Decorative- often to impart a specific colour, but also to create a particular reflective property such as gloss or matt.

Coating Analysis [edit]

Numerous methods be for evaluating coatings, including both destructive and non-subversive methods. The most common destructive method is microscopy of a mounted cross-section of the coating and substrate. The almost common non-destructive techniques include ultrasonic thickness measurement, XRF (10-ray fluorescence) coatings thickness measurement, and ultra-micro hardness testing.

Coating formulation [edit]

The formulation of the blanket depends primarily on the function of the coating and also on aesthetics required such every bit colour and gloss. The four chief ingredients are the resin (or binder), solvent which perhaps water (or solventless), pigment(s) and additives.^[viii]

Coating processes [edit]

Coating processes may be classified as follows:

Vapor deposition [edit]

Chemical vapor deposition [edit]

Metalorganic vapour phase epitaxy
Electrostatic spray assisted vapour deposition (ESAVD)
Sherardizing
Some forms of Epitaxy
- Molecular axle epitaxy

Physical vapor deposition [edit]

Cathodic arc deposition
Electron beam physical vapor deposition (EBPVD)
Ion plating
Ion beam assisted deposition (IBAD)
Magnetron sputtering
Pulsed laser degradation
Sputter degradation
Vacuum degradation
Vacuum evaporation, evaporation (degradation)
Pulsed electron deposition (PED)

Chemical and electrochemical techniques [edit]

Conversion coating
- Autophoretic, the registered trade proper name of a proprietary series of autodepositing coatings specifically for ferrous metallic substrates^[9]
- Anodising
- Chromate conversion coating
- Plasma electrolytic oxidation
- Phosphate (coating)
Ion beam mixing
Pickled and oiled, a type of plate steel coating
Plating
- Electroless plating
- Electroplating

Spraying [edit]

Spray painting
High velocity oxygen fuel (HVOF)
Plasma spraying
Thermal spraying
Kinetic metallization (KM)
Plasma transferred wire arc thermal spraying
The mutual forms of Powder coating

Gyre-to-gyre blanket processes [edit]

Common roll-to-roll coating processes include:

Air knife coating
Anilox coater
Flexo coater
Gap Coating
- Knife-over-ringlet coating
Gravure blanket
Hot cook coating- when the necessary coating viscosity is accomplished by temperature rather than solution of the polymers etc. This method commonly implies slot-die coating to a higher place room temperature, but it also is possible to have hot-melt roller coating; hot-melt metering-rod coating, etc.
Immersion dip coating
Kiss coating
Metering rod (Meyer bar) coating
Roller coating
- Forward roller coating
- Reverse curl coating
Silk Screen coater
- Rotary screen
Slot Die coating - Slot die blanket was originally developed in the 1950s.^[ten] Slot die blanket has a depression operational toll and is easily scaled processing technique for depositing thin and uniform films rapidly, while minimizing textile waste material.^[11] Slot dice coating engineering science is used to deposit a variety of liquid chemistries onto substrates of various materials such as drinking glass, metal, and polymers by precisely metering the procedure fluid and dispensing it at a controlled rate while the coating die is precisely moved relative to the substrate.^[12] The complex inner geometry of conventional slot dies require machining or tin can exist accomplished with 3-D printing.^[xiii]
Extrusion coating - mostly high force per unit area, often high temperature, and with the web travelling much faster than the speed of the extruded polymer
- Curtain coating- low viscosity, with the slot vertically in a higher place the web and a gap between slotdie and web.
- Slide blanket- bead coating with an angled slide between the slotdie and the bead. Commonly used for multilayer coating in the photographic industry.
- Slot die bead coating- typically with the web backed by a roller and a very modest gap between slotdie and web.
- Tensioned-spider web slotdie coating- with no bankroll for the web.
Inkjet printing
Lithography
Flexography

Physical coating processes [edit]

Langmuir-Blodgett^[fourteen]
Spin blanket
Dip coating

Run across also [edit]

Wait up coating in Wiktionary, the free lexicon.

Electrostatic coating
Picture show Coating drugs
Adhesion Tester
Deposition
Formulations
Langmuir-Blodgett film
Nanoparticle deposition
Optically active additive, for inspection purposes afterward a blanket operation
Plastic moving-picture show
Printed electronics
Seal (mechanical)
Thermal barrier coating
Thermal cleaning
Sparse-film degradation
Paper coating
Thermosetting polymer
Vitreous enamel
Pigment
Polymer scientific discipline

References [edit]

^ Howarth, G A; Manock, H 50 (July 1997). "Water-borne polyurethane dispersions and their utilize in functional coatings". Surface Coatings International. 80 (7): 324–328. doi:10.1007/bf02692680. ISSN 1356-0751. S2CID 137433262.
^ Howarth K.A "Synthesis of a legislation compliant corrosion protection blanket system based on urethane, oxazolidine and waterborne epoxy engineering" Master of Science Thesis April 1997 Regal Higher London
^ S. Grainger and J. Blunt, Engineering Coatings: Design and Awarding, Woodhead Publishing Ltd, Great britain, 2nd ed., 1998, ISBN 978-1-85573-369-5
^ Mutyala, Kalyan C.; Singh, Harpal; Evans, R. D.; Doll, G. Fifty. (23 June 2016). "Effect of Diamond-Similar Carbon Coatings on Ball Bearing Functioning in Normal, Oil-Starved, and Debris-Damaged Conditions". Tribology Transactions. 59 (half-dozen): 1039–1047. doi:x.1080/10402004.2015.1131349. S2CID 138874627.
^ Mutyala, Kalyan C.; Ghanbari, East.; Doll, Thou.L. (Baronial 2017). "Consequence of deposition method on tribological performance and corrosion resistance characteristics of Cr 10 N coatings deposited by physical vapor deposition". Thin Solid Films. 636: 232–239. Bibcode:2017TSF...636..232M. doi:ten.1016/j.tsf.2017.06.013. ISSN 0040-6090.
^ Gite, Vikas 5., et al. "Microencapsulation of quinoline as a corrosion inhibitor in polyurea microcapsules for application in anticorrosive PU coatings." Progress in Organic Coatings 83 (2015): 11-18.
^ Glass flakes
^ Müller, Bodo (2006). Coatings formulation : an international textbook. Urlich Poth. Hannover: Vincentz. p. 19. ISBN3-87870-177-two. OCLC 76886114.
^ Fristad, W. E. (2000). "Epoxy Coatings for Automotive Corrosion Protection". SAE Technical Paper Series. Vol. one. doi:10.4271/2000-01-0617.
^ United states 2681294, "Method of coating strip material", issued 1951-08-23
^ Beeker, L.Y. (March 2018). "Open-source parametric 3-D printed slot dice system for thin film semiconductor processing" (PDF). Additive Manufacturing. 20: ninety–100. doi:10.1016/j.addma.2017.12.004. ISSN 2214-8604.
^ "Slot Die Blanket - nTact". nTact . Retrieved 2018-11-24 .
^ "Open up Source 3D printing cuts cost from $4,000 to merely $0.25 says new study - 3D Printing Manufacture". 3dprintingindustry.com . Retrieved 2018-11-24 .
^ "What and why: Langmuir-Blodgett films" (PDF). ^{[ permanent dead link ]}

Titanium and titanium alloys, edited by C. Leyens and Grand. Peters, Wiley-VCH, ISBN 3-527-30534-3, table half dozen.2: overview of several blanket systems and fabriction processes for titanium alloys and titanium aluminides (amended)
Coating Materials for Electronic Applications: Polymers, Processes, Reliability, Testing past James J. Licari; William Andrew Publishing, Elsevier, ISBN 0-8155-1492-1
High-Operation Organic Coatings, ed. AS Khanna, Elsevier BV, 2015, ISBN 978-i-84569-265-0

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Source: https://en.wikipedia.org/wiki/Coating